Trek through majestic pine forests and mysterious Tupelo swamps of northern Florida to find the eastern diamondback rattlesnake; the Appalachicola River is home to the legendary reptile that kills nearly half the people it bites.

Follow a foal and its small herd of one of the last groups of wild horses in Alberta as they struggle through four seasons to make it to adulthood.

Cooper, a dog-aggressive Boxer, is a danger to other dogs in the neighborhood and his owners are at their wits end.

A Shih Tzu who is pulled from the flames of a burning home suffers from severe smoke inhalation. His owners, who have lost everything, are terrified they will now lose a family member.

After the training ends, the K9 handlers reflect on their experiences.